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Finding the Fourth Proportional to 132,064.40, 198,122.20 and 66,400.40

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Solution

The fourth proportional to 132,064.40, 198,122.20 and 66,400.40 is: 99,613.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,064.40 : 198,122.20 = 66,400.40 : x
  2. Step 2: Convert to fraction form
    132,064.40/198,122.20 = 66,400.40/x
  3. Step 3: Cross multiply
    132,064.40x = 198,122.20 × 66,400.40
  4. Step 4: Simplify right side
    132,064.40x = 13,155,393,328.88
  5. Step 5: Solve for x
    x = 13,155,393,328.88/132,064.40
  6. Step 6: Final answer
    x = 99,613.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.